South Mountain Road curves along the base of the ridge past stone walls and the edges of old orchards, and in May the whole lane goes loud with green. Victor and Son Landscaping keeps lawns on roads like that one, where properties run wide and the mowing has to work around ledge, shade and apple trees. Spring in Rockland is quick — grass gets a week ahead of you if you let it — so the earliest cuts set the tone for everything after. A yard that is level, edged and clear makes the old houses standing on it look like themselves again. Lawn care for Clarkstown.